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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.5 >> Diagnostic Tests >> DTC P0460: Fuel Level Sensor Function (Slosh) >> Diagnostic Procedure
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Diagnostic Procedure

  1. Disconnect fuel pump assembly harness connector located behind access cover, under rear seat. Turn ignition on. Measure voltage between ground and fuel pump assembly harness connector terminal No. 2 (Green wire). See Figure. If voltage is battery voltage, go to next step. If voltage is not battery voltage, check intermediate connectors in circuit and repair or replace as necessary. If intermediate connectors are OK, repair open or short circuit in Green wire between combination meter and fuel pump assembly connector, then perform DTC CONFIRMATION TEST  to verify repair.
  2. Turn ignition off. Check continuity between ground and fuel pump assembly harness connector terminal No. 5 (Black/White wire). Continuity should exist. Also, check circuit for short to voltage. See 2.5L under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS in ELECTRICAL. If problem exists, check intermediate connectors in circuit and repair or replace as necessary. If intermediate connectors are OK, repair open or short circuit as necessary and perform DTC CONFIRMATION TEST  to verify repair. If circuit is okay, go to next step.
  3. Disconnect ECM harness connector. See Figure. Check continuity of between fuel pump assembly harness connector terminal No. 2 (Green wire) and ECM harness connector terminal No. 87 (Green/Red wire). See Figure and Figure . Continuity should exist. Also, check circuit for short to voltage. If problem exists, check intermediate connectors in circuit and repair or replace as necessary. If intermediate connectors are OK, repair circuit as necessary and perform DTC CONFIRMATION TEST  to verify repair. If circuit is okay, go to next step.
  4. Remove fuel pump assembly from fuel tank. Measure resistance between terminals No. 2 (+) and 5 (-) at fuel level sensor (component side), with sensor at specified positions (observe polarity). See FUEL LEVEL SENSOR RESISTANCE . If resistance is as specified, go to next step. If resistance is not as specified, replace fuel level sensor and perform DTC CONFIRMATION TEST  to verify repair.
    FUEL LEVEL SENSOR RESISTANCE

    Float Position Ohms
    Full (1) 4-6
    1/2 31-34
    Empty (1) 80-83
    (1) When float rod is in contact with stop.
  5. No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLESHOOTING - NO CODES article.
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